From fe6aa9663d4cdabdc6e71db6068f8cd9e3739ffe Mon Sep 17 00:00:00 2001 From: Your Name Date: Tue, 19 May 2026 13:14:48 +0530 Subject: feat: WiFi beacon price discovery via Vendor IE (two-board verified) Price discovery allows TollGate ESP32 boards to advertise their per-step price via WiFi Vendor-Specific Information Elements (OUI 0xC0FFEE) in beacon and probe response frames. Nearby boards passively scan and build a market view of competing TollGates without requiring internet access. Features: - beacon_price.c/h: 26-byte packed Vendor IE payload (price, step, metric, mint_hash, geohash, npub_hash), injected via esp_wifi_set_vendor_ie() - market.c/h: Passive WiFi scan receiver, vendor IE callback parsing, BSSID-correlated market entries, effective price ranking - GET /market API endpoint: JSON market snapshot with discovered entries - AP-only services: beacon + market + API start on WIFI_EVENT_AP_START, independent of STA connectivity - STA reconnect fix: 2s delay between retries creates scan windows; s_sta_connecting guard prevents double-connect - write-config-ap-only-a/b Makefile targets for STA-less testing - market_tick() in main loop, client price comparison logging Hardware verified: both boards discover each other via Vendor IE beacons. Board A sees TollGate-C0E9CA (RSSI=-30), Board B sees TollGate-B96D80 (RSSI=-25). test-market.mjs: 9/9, test-price-discovery.mjs: 7/7 per board. Unit tests: 45 new assertions across test_beacon_price (28) and test_market (17). All 15 test suites pass. ESP-IDF build clean for ESP32-S3. --- main/CMakeLists.txt | 2 ++ 1 file changed, 2 insertions(+) (limited to 'main/CMakeLists.txt') diff --git a/main/CMakeLists.txt b/main/CMakeLists.txt index 6408e14..abbe53b 100644 --- a/main/CMakeLists.txt +++ b/main/CMakeLists.txt @@ -21,6 +21,8 @@ idf_component_register(SRCS "tollgate_main.c" "local_relay.c" "relay_selector.c" "sync_manager.c" + "beacon_price.c" + "market.c" INCLUDE_DIRS "." REQUIRES esp_wifi esp_event esp_netif nvs_flash esp_http_server lwip json esp_http_client mbedtls esp-tls log spiffs -- cgit v1.2.3